The minimum residential roof pitch shall be five to twelve (5:12). Where the existing roof pitch is less than five to twelve (5:12), any addition or alteration shall maintain existing roofline as a minimum.
A. Truss Roofs: Provide temporary bracing during erection and permanent lateral and cross bracing as specified by the manufacturer. A stiff back will be required at mid span above all rooms.
B. Roof Sheathing: Roof sheathing shall be exterior grade roof sheathing. Apply with face grain perpendicular to supports and panels continuous over two (2) or more supports with clips.
1. Pre-manufactured roof trusses spaced two feet (2') on center shall be installed along with five-eighths inch (5/8") exterior grade plywood sheathing clips are required. Conventional roof rafters spaced sixteen inches (16") on center with exterior grade plywood sheathing clips are required.
C. Protection Of Exposed Edges: Protect exposed edges of sheathing along the eaves and the rake of the roof with moldings or sheet metal flashing (drip edge). Flashing along eaves may be integral with gutters.
D. Roof Shingles: Add new sections to IBC® 1506.3.1, 1507.8.5.1 and IRC 905.7.8 and R905.8.10 to read as follows: "All roofing shingles shall have a minimum twenty-five (25) year warranty. Said shingles shall be placed over a minimum fifteen pound (15 lb.) felt paper. Wood shakes shall have a minimum twenty-five (25) year warranty. Said wood shakes shall be placed over thirty pound (30 lb.) felt paper."
E. Truss/Rafter Connection: Is required in accordance with 2018 IRC section R802.5.2 and section R802.11. (Ord. 2014-46, 6-3-2014; amd. Ord. 2020-56, 6-16-2020)